Security·November 28, 2025·10 min read
How NPM Was Hacked: The Shai-Hulud Attack Explained Simply
A dangerous attack that stole developer secrets and spread automatically through npm packages. Learn what happened, how it works, and how to protect yourself.
Introduction
What Made It Dangerous
How the Attack Worked
The Attack Flow
Why It Was So Effective
The Impact
How to Protect Yourself
Best Practices
Lessons Learned
Filed under fieldnotesNovember 28, 2025